- Who
- Medici Collection LLC
- What
- 422.56 carat(s)
- Where
- United States (Los Angeles)
- When
The largest cat's eye tanzanite weighs 422.56 carats (84.51 g), and is owned by Medici Collection, LLC (USA) as verfied on 9 March 2020.
Dion has had a keen interest in rare archeological artefacts and gemstones for many years.